Level.



M. H. CONSTANTINE.

Level. l APPLICATIQN FiLED JUNE H. 1918,

Patented Feb. 18, 1919.

an r

strat application inea June' 8,'419153. senti nel 238.909.

To ZZ ylr/3,0m, it may concern:

lle it known that I, MICHAEL H. CONSTAN- rrixn., a citizen of the United Stat-es, residing: at Franklinville. in the county of Cattaraw ,ens an( State of New York, have invented new and useful Improvements in Levels. of which the followingis a speciication.

This invention relates to a level of the eleftrirallv ticularlv to the case in which the batter)y is cav'rnn that supplies the energ')v for the lamp level.

The primary object ot' the invention is to provide a level wherein the batter): for supplying energy to the bubble Aglass lamp is arranged within a casethe construction nl which is such. that the batter)v is not onlv prevented from becoming affected b v climatic condition. but the case may be readily disconnected from the level for the renewal ni the battery when the occasion requires.

nother object of the invention is to provide a sectional case of this character wherein one of the case sections is provided with a ein-nit closer which is so constructed that it :nav be employed to prevent the shiftingof the battery when the level is in use.

VVlith these and other objects'in view the intention resides in the novel combination and Y rangement of parts which will be lurninalter described and claimed.

n the drawing l?? vnre 1. is a view in side elevation partly von of a level wherein the electrical is supplied tothe bubble glass lamp atteries carried in cases constructed ccnrdance with the invention.

2 is a detailed sectional view upon enlarged scale through a portion of the inv Fig. 3 is a perspective view of one of the hat :ry cases, the sections thereof being shmvn spaced apart.

Like characters of reference denote the correspondingr` parts throughout the various views in the drawing'.

Referring now to the drawing in detail wherein like characters of reference denote the corresponding parts throughout the vailluminated type and more par-4 ploved to illuminate the bubble glass in LEVEL. i A

Specification of Letters-Patent:

tiene rat-@atea i rious views. the letter A designates a spirit level having the usual openings 2 therein through which pass bubble glasses Formed in the level A adjacent each'of the the casinar section openings 2 is a socket 4 between which and the opening adjacent thereto communication is established by means of a passage 5.

Disposed in each of the sockets is a batterv case constructed in accordance with `the invention and comprising a pair of detachablv connected case sections 6 and 'l'. The case section 7 is provided at one end with' a reduced extension 8 which when the case sectionsare assembled extends within the case section 6 and maintains the sections in. alinenient with each other while being dis posed within or withdrawn from one of the sockets in the level A. Formed on the opposite end of the case section 7 is a hood 9 in which is arranged a lamp l removably mounted in anv end wall of the casing section 7. llach of the casingy sections is provided with an attaching flange l1 which provided with a central opening through which may be passed a screw or the like to secure the battery case to the level A.

A strip of resilient conducting material l2 is secured between its ends to a wall of 4" and is bent upon. one side of its point of connection with the casing section to provide an arm 13 which through its engagement vwith a battery le in the casing prevents the shifting of the batter)v while the level [L is in use. Fixed to the strip l2 adjacent its outer end is a button which extends exteriorlv of the battery `case through an openingr in the casing; section 7. so that b v pressing upon the button 15 an end of the strip l2 may be brought into contact with one of the poles of the batteryv to establish electrical communication between the battery 14 and the lamp l0.

When it is desired to de'e'nergize the lamp l0 pressure is released from the butt-on l5 to break the contact between the strip 'l2 and one of the poles of the battery.

From the foregoing description taken in y socket with said opening, said passage being above the bubble glass, a housing in said socket, a hood on said housing commu nicating With said passage, an electric lamp in said housing adjacent the end of the passage and a battery in said housing connected with the lamp.

In testimony whereof I affix my signature.

MICHAEL H. CONSTANTINE. 

